Dispersive liquid-liquid microextraction coupled with surface enhanced Raman scattering for the rapid detection of sodium benzoate

Novel strategy for food safety risk management and communication: Risk identification for benzoic acid residues in pickled vegetables

“…This study only utilized simple ultrasonic extraction and filter paper filtration with no complicated pretreatment procedures, such as dispersive liquid–liquid microextraction (Xue et al., 2020). The results demonstrate the feasibility of using the SERS‐AirPLS spectrum to identify whether pickled vegetables exceed the regulatory standard of 600 ppm for the task of monitoring and rapid screening.…”

“…In the past, few studies have investigated the use of Raman spectroscopy for the detection of preservatives in foods. Among the existing studies, the main application was for the detection of BA in carbonated beverages and medicines (Cai et al., 2018; Xue et al., 2020). In these research areas, novel pretreatment methods such as silicone thin film microextraction or dispersive liquid–liquid microextraction were coupled with SERS to determine the concentration of BA.…”

“…From prior investigations, we have identified the prospective utility of surface-enhanced Raman scattering (SERS) for the rapid monitoring of BA in pickled foods (Tsen et al, 2019;Xue et al, 2020).…”

“…From prior investigations, we have identified the prospective utility of surface‐enhanced Raman scattering (SERS) for the rapid monitoring of BA in pickled foods (Tsen et al., 2019; Xue et al., 2020). The purpose of this study is to develop a SERS‐based method for the rapid detection of BA in pickled vegetables that is inexpensive, convenient, effective, and only uses small pretreatment equipment to enable field monitoring.…”

Encapsulated Nanodroplets for Enhanced Fluorescence Detection by Nano‐Extraction

“…[ 1 ] In this method, fine droplets of extractant form in a ternary system consisting of a co‐solvent, the sample solution and the immiscible extractant liquid through spontaneous emulsification, referred to as the “ouzo effect”. [ 2,3 ] To date, the scope of DLLM applications has ranged from the detection of odor compounds in beverages, [ 4 ] preservatives in medicine, [ 5 ] metal ions in food, [ 6 ] herbicides in water, [ 7 ] and illicit drugs in alcoholic drinks [ 8 ] to DNA in biological matrices. [ 9 ] However, a bottleneck of DLLM is the separation of extractant prior to the quantification of the analyte.…”